V1/man/man1/check.1

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        11/3/71                                                    CHECK (I)


NAME              check -- file system consistency check

SYNOPSIS          check [ filesystem [[ blockno1 ... ] ]

DESCRIPTION       check will examine a file system, build a bit map of used
                  blocks, and compare this bit map against the bit map
                  maintained on the file system. If the file system is not
                  specified, a check of both /dev/rf0 and /dev/rk0 is
                  performed. Output includes the number of files on the file
                  system, the number of these that are `large', the number of
                  used blocks, and the number of free blocks.
FILES             /dev/rf0, /dev/rk0

SEE ALSO          find

DIAGNOSTICS       Diagnostics are produced for blocks missing, duplicated, and
                  bad block addresses. Diagnostics are also produced for block
                  numbers passed as parameters. In each case, the block
                  number, i--number, and block class (i = inode, x indirect, f
                  free) is printed.

BUGS              The checking process is two pass in nature. If checking is
                  done on an active file system, extraneous diagnostics may
                  occur.

                  The swap space on the RF file system is not accounted for
                  and will therefore show up as `missing'.

OWNER             ken, dmr